Access device for a vehicle
US11679737B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2019 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Sep 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Disclosed is an access device of a vehicle having an on-vehicle control device configured to transmit enquiry signals to a mobile identification transmitter to determine the state of motion thereof, and adapt the transmission of the enquiry signals for a response signal received from the mobile identification transmitter containing the state of motion of the mobile identification transmitter, or on the basis of the absence of the response signal. Energy is saved in the event of a response signal containing a communicated stationary state of the mobile identification transmitter or in the absence of a response signal by reducing the frequency of the transmission of the enquiry signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.